This has to do with Norton Utilities. When I run Defrag, it get to about 76% Speed Disc shows a window that says "Speed Disc has been interrupted. Volume Snapshot has been stopped. Locke by another application! 'C:\swapfile.sys'. Data CRC error. Unable to proceed current operation. The Volume or its contents are likely corrupted. Disk Optimization operation has failed." Can anyone help me with this issue, or is it too late for this hard drive?